Trolley-brush.



No. 878,062. PATBNTED FEB. 4, 1908. e. HEINEMAN.

TROLLEY BRUSH. APPLICATION FILED SEPT. 13, 1907.

' GEORGE HEINEMAN, OF SAN FRANCISCO, (iALIFORNLA.

'rRoLLEY-BRUsH.

Specification of Letters Patent.

Patented Feb. 4, 1908.

Application filed $eptember 13.1907. Serial No. 392.723.

To all whom it may concern:

Be it known that I, GEORGE HEINEMAN, a subject of the Emperor of Germany, residing at the city and county of San Francisco and State ;of California, have invented certain new and useful Improvements in Trolley- Brushes, of which the'following is a specifica tion.

The hereinafter described invention relates to an overhead trolley-brush for use in connection with overhead electric car systems, theobject of the invention being to provide a trolley-brush mounted on and extending substantially the length of the car, the said brush being designed to sweep across exposed contact plates arranged above the roadbed and depending at regular intervals from an overhead feed or supply cable for the electric current, the overhead electric car system with which the invention is to be used being set forth in a companion application-filed by me of even date herewith To comprehend the invention reference should be had to the accompanying sheet of drawings, Wherein 'Figure 1 is aside view of an electrically operated car with the trolley-brush applied thereto. Fig. 2 is a plan view of the trolleybrush removed from the car, a portion of the contact field composed of transverse Wires, or plates being broken away.

In the drawings, the numeral 1 is used to designate an ordinary electric car, which-is provided with the usual motors (not shown). At each end of the car is secured a socket plate 2, the posts or poles 3 are secured,

which said posts or poles are insulated to the point 4. The said posts or poles are secured within the sockets 2 by means of a lead packing, and the said posts or poles extend above the roof of the car 1 for approximately six feet, each post or pole being connected at or near its base to the motors of the car b means of the connection 5.

The trolley-brush, which is arranged above the car as a superstructure, comprises a series of longitudinally disposed wires 6, which are connected at each-end to the cross-heads 7 by means of the eye-screws 8, and the said longitudinally disposed Wires 6 are connected one to the other by the transverse wires 9, which wires are arranged close together and form a contact field for the trolley brush. These transverse wires are about three or four feet long, so as to provide a field of such width as to insure a portion of its surface bearing against and making contact wlth the overhead source of electrical supply at all times. Danger of the trolley-brush breaking its connection or what is commonly termed slipping the trolley ,by reason of the oscillation of the car, or while the car is rounding a curve in' the line of the trackway being thus avoided, as some one portion of the field of the trolley-bnush is at all times in contact with the source of electrical supply for the current.

The longitudinally disposed wires 6- are approximately the length of the car roof, about forty feet, more or less, and one of the cross-heads 7 to which the wires are connected is secured to the arm 10, by means of, the coupling bolts 11. The said arm 10, and the cross-head at the opposite end of the trolley-brush is provided with a central opening, which permits of the same being fitted onto the upper noninsulated portion of the poles or posts 3, the same being held thereto in any suitable manner. The outer face of each cross-head 7-is protected by a rubber strip 12.

As the described trolley brush sweeps across the contacts of an overhead supply or feed cable, an electrical circuit is established, the-current passing through the transverse wires 9, which, if so desired may consist of thin metallic plates, to the longitudinally disposed wires 6, and from said wires through the cross-heads 7 to the poles or posts 3, and by the connections 5 to the motors of the car.

Having. thus described the invention what is claimed as new and desired to be protected byLetters Patent is 1. An overhead trolley-brush for electrically operated cars, the same comprising a series of longitudinally disposed wires, and a series of transverse. wires arranged in close proximity. to each other and connected to the said longitudinally disposed wires, the said transverse wires forming the field of the trolley-brush, the length of the said trolleybrush being substantially the length of the car by which it is to be carried.

2.- The. combination with an electrically operated car, of a trolley-brush pole secured to each end thereof and extended above the roof of the car, of cross-heads connected to each of the said poles, a series of longitudinally disposed wires secured to the said crossheads,'and a series of transverse wires connected to the longitudinally disposed-wires and constituting the field of the trolley-brush.

' 3. The combination with an electrically operated oer; efan insulated tiolley brush. ednileetihgthe'l'eng mudmally disposedwires,

pole secured to each end of the cal; and ex- 'theeaidwires eonetituting the fiel tid ef the tended above the roof thereefj oficpnneetions trolley-brush.

between the said poles and the nfaotor sof the 111 i es'tlmony w ereef I have sighed: my 15.

5 cer, 'of an erm secure l tea, noniilsulated porfneme t'o "this specification in :the presence of 1 tron of one of the SE'ld poles, of a crossheed tweesub seribipg witnesses.

' i 'con'nectedto said arm, a-cljoss-head seured y-GEQRGE to Y a nomnsuleted portionof. the opposite trolley brush 01e,. of'a series' gfvlengitfidi- Witnesses? 10 nally dis osef wires' eonn ecting' the "sa.id I NQA. AoKER,1

j cross-hes. s, and a series bf' trensvereewires; D. B; RICHARDS; 

